Alliant PowderÂ® now offers a new propellant to satisfy your shooting passion. Introducing 20/28â„¢, a powder designed to deliver competition grade performance to 20 and 28 gauge clay target shooters. Extremely clean burning with proven lot to lot consistency, 20/28 is sure to elevate any sub-gauge shooter's confidence...and scores. Designed for skeet and sporting clays and proudly made in the USA, the primary purpose is 20 and 28 gauge target loads. 1 lb canister.